How to rename files by batch?

Question

I use OI file manager, but I would like to know if there is a way to remove spaces from file names and replace them with underscores, preferably in batch mode?

I would even be willing to perform this operation on my windows laptop, so this isn't specifically an Android question, though I'd prefer to do this on my phone. I'm a graphic artist and I have thousands of inconsistently named images in various places, and I'd really like to avoid doing this manually, one by one, as it would take months!

Answer 1

This is certainly possible with tasker, though I cannot give you the "complete recipe". Basically, you could create a task like this:

• Execute Command: ls -1 /path/to/your/files, and capture the output into a variable
  ^{the command will list all files in the given directory, one file per line}
• Work on the variable. There are possibilities to convert it into an array, so you can use a for loop to handle each file
• again with variables, you can setup the rename command (e.g. using Variable Search Replace) in a new variable. Pseudo-Code: mv "$old_name" "$(s/ /_/,$old_name)"

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But it is much easier to use a simple shell script in some terminal app (or via adb shell) to achieve the same:

cd /path/to/your/files
for file in $(ls -1); do mv "$file" "$(echo $file|sed 's/ /_/g')"; done